Question 141·Hard·Rhetorical Synthesis
While researching a topic, a student has gathered the following notes:
- Voyager 1 and Voyager 2 were both launched by NASA in 1977.
- Voyager 1 became the first spacecraft to cross into interstellar space, achieving this milestone in 2012.
- Voyager 2 is the only spacecraft to have conducted close-range studies of Uranus and Neptune.
- Voyager 2 crossed into interstellar space in 2018, six years after Voyager 1.
- Both probes carry identical Golden Records containing sounds and images from Earth.
The student wants to write one sentence that highlights the distinct achievements of Voyager 1 and Voyager 2. Which choice most effectively uses relevant information from the notes to accomplish this goal?
For rhetorical synthesis questions that ask you to choose a sentence based on research notes, start by carefully reading the prompt to identify the specific goal (for example, highlight differences, summarize causes, or show a trend). Then skim the notes and quickly mark which points are essential to that goal and which are shared or less relevant. Evaluate each answer choice by asking: (1) Does it directly accomplish the stated goal? (2) Does it use only information from the notes—no outside claims? (3) Does it focus on the most relevant points without unnecessary details? Eliminate choices that focus on shared facts when the goal is to show differences, that ignore one of the required elements, or that add unsupported information, and then pick the most clear and concise of,2
Hints
Focus on the task in the question
Underline the phrase in the question that states the student’s goal. What exactly does the sentence need to emphasize about Voyager 1 and Voyager 2?
Separate shared facts from unique achievements
Look back at the bullet points. Which notes describe things both probes did, and which notes describe something that only Voyager 1 or only Voyager 2 did?
Check that both spacecraft get a distinct “highlight”
For each answer choice, ask: does it clearly say what makes Voyager 1 special and what makes Voyager 2 special, rather than just mentioning one probe or a feature they share?
Watch for relevance and extra information
Eliminate any choice that focuses mainly on shared features or adds claims that are not supported by the notes, even if the sentence sounds impressive.
Step-by-step Explanation
Understand the writing goal
The question asks for one sentence that highlights the distinct achievements of Voyager 1 and Voyager 2. That means the sentence must:
- Mention both spacecraft, and
- Emphasize what is unique about each one (not what they have in common), using only information from the notes.
Identify which notes describe distinct vs. shared facts
From the notes:
- Shared facts (not distinct achievements):
- Both launched in 1977.
- Both carry identical Golden Records.
- Distinct achievements:
- Voyager 1: first spacecraft to cross into interstellar space (2012).
- Voyager 2: only spacecraft to study Uranus and Neptune up close, and it entered interstellar space in 2018, six years after Voyager 1. A strong answer will focus on these distinct points and contrast the two probes.
Evaluate how well each option fits the goal
Check each choice against the goal of highlighting distinct achievements:
- Choice A mixes a shared detail (Golden Records) with some distinct achievements, but it opens by emphasizing what the probes share instead of what makes each unique, making it less focused.
- Choice B talks only about the Golden Records (a shared feature) and does not mention any unique achievements.
- Choice D brings in “traveled farther than any other spacecraft,” which is not in the notes, and does not clearly state what each probe uniquely achieved. Only one option directly contrasts Voyager 1’s and Voyager 2’s unique milestones using relevant notes.
Select the sentence that clearly contrasts the unique achievements
The best option is the one that:
- States Voyager 1’s unique achievement: being the first spacecraft to enter interstellar space.
- States Voyager 2’s unique achievement: being the only probe to have studied Uranus and Neptune up close.
- Correctly mentions that Voyager 2 entered interstellar space six years later. Choice C does exactly this: “Voyager 1 became the first spacecraft to enter interstellar space, whereas Voyager 2, which entered interstellar space six years later, is the only probe to have studied Uranus and Neptune up close.”